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A wave-relative framework analysis of AEW-MCS interactions leading to tropical cyclogenesis
Identification_Information:
Citation:
Citation_Information:
Originator:The Pennsylvania State University
Publication_Date:2020
Title:
A wave-relative framework analysis of AEW-MCS interactions leading to tropical cyclogenesis
Other_Citation_Details:
Núñez Ocasio, K.M., J.L. Evans, and G.S. Young, 2020: Mon. Wea. Rev., A wave-relative framework analysis of AEW-MCS interactions leading to tropical
Online_Linkage: http://www.datacommons.psu.edu/
Description:
Abstract: 
An African easterly wave and associated MCSs dataset has been created and used to evaluate the propagation of MCSs, AEWs, and especially, the propagation of MCSs relative to the AEW they are associated with (i.e., wave-relative framework). The thermodynamic characteristics of AEW-MCS systems are also analyzed. The analysis is done for both AEW-MCS systems that develop into at least a tropical depression and those that do not to quantify significant differences between waves that undergo tropical cyclogenesis (DAEW) and those that do not (NDAEW). It is shown that DAEWs over West Africa are associated with a larger number of CCC-type convection (squall lines) than NDAEWs and that these convective systems propagate at the same speed of the AEW trough, whereas convection associated with NDAEWs over West Africa moves faster than the trough. These results become important for the intensification of the AEW vortex as this slower-moving convection, i.e. moving at the same speed of the AEW trough, spends more time supplying moisture and latent heat to the AEW vortex supporting its further intensification. An analysis of the rainfall rate (MCS intensity), MCS area and latent heat rate contribution reveals that there are statistically significant differences between these two wave groups, specifically over West Africa where the fraction of extremely large MCS areas associated with DAEWs is larger than for NDAEWs. A variance decomposition analysis indicates that the contribution of MCS area variability to the latent heat rate variance of AEW-MCS systems is larger than that from rain rate variance.
Supplemental_Information: 
Authors: Núñez Ocasio, K.M., J.L. Evans, and G.S. Young
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2020
Currentness_Reference: 
publication date
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Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:climatologyMeteorologyAtmosphere
Access_Constraints:None.
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Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person:K.M. Núñez Ocasio
Contact_Organization:Penn State
Contact_Address:
Address_Type:mailing address
Address: 
402 Walker Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:USA
Contact_Electronic_Mail_Address:kmn18@psu.edu
Contact Instructions: 
Núñez Ocasio, K.M., J.L. Evans, and G.S. Young, 2020:  Mon. Wea. Rev., A wave-relative framework analysis of AEW-MCS interactions leading to tropical
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Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Organization:Penn State Data Commons
Contact_Address:
Address_Type:mailing and physical address
Address: 
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 - 8792
Contact_Electronic_Mail_Address:datacommons@psu.edu
Distribution_Liability: 
The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
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Metadata_Reference_Information:
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Penn State Data Commons
Contact_Position:Metadata Coordinator
Contact_Address:
Address_Type:mailing address
Address: 
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:814-865-8792
Contact_Electronic_Mail_Address:datacommons@psu.edu
Metadata_Standard_Name:FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version:FGDC-STD-001-1998
Metadata_Time_Convention:local time
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